VIBRATION - CAUSES AND EFFECTS

Vibration can cuased serious effects to pumps as well as other rotating equipment

The causes of vibration can be due to mechanical or hydraulic reasons



Mechanical fault

a) most common is unbalanced impeller .shafts . worn out impeller or even coupling
it is quite common for maintenance personel to change damaged bearings
and put the pump running

b) worn out bearings

c) misalignment of pump and driver

d) Pipe strained

e) mass of pump being too small

f) loose screws on pump mounting or baseplate

g) bent shaft

HYDRAULIC REASON

a) cavitation

b) air in the system ,leak or vortexing

c) too high speed of pump

EFFECTS
a) damages of mechanical seal and the life of mechseal is directly related to the
shaft movement
b) bearings and other pump components